Seawater - material selection
Seawater - material selection
(OP)
I have a lot of technical literature that is saying CF8M is not suitable for
sea water due to pitting corrosion. However I am looking for some specific
research indicating corrosion rates of different metals like
CF3M, CF8M, Duplex, Super Duplex etc.
Is there is someone that could help me for locating specific comparison
of such metals in sea water, I would appreciate the help.
sea water due to pitting corrosion. However I am looking for some specific
research indicating corrosion rates of different metals like
CF3M, CF8M, Duplex, Super Duplex etc.
Is there is someone that could help me for locating specific comparison
of such metals in sea water, I would appreciate the help.





RE: Seawater - material selection
Castings_Stainless_Steel_and_Nickel_Base
http://www.nickelinstitute.org/~/Media/Files/Techn...
Materials for saline water, desalination and oilfield brine pumps
http://stainless-steel-world.net/pdf/11004.pdf?res...
Materials Selection for Seawater Pumps
http://turbolab.tamu.edu/proc/pumpproc/P26/ch09_Mo...
NORSOK M-630 Material data sheets and element data sheets for piping
http://www.norsok-mds-d47.de/pdf/norsok.pdf
STEEL CASTINGS HANDBOOK Supplement 8 High Alloy Data Sheets Corrosion Series
http://www.sfsa.org/sfsa/pubs/hbk/s8.pdf
RE: Seawater - material selection
Another good source for sound papers in the professional tools section of the Outokumpu web site.
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Plymouth Tube
RE: Seawater - material selection
Please respect us....
Help complete this thread
Tell us more about your service conditions and your selection of pump materials...
Many people have used inexpensive GRP/FRP cased centrifugal pumps with excellent performance in salt water service.
Regards
MJCronin
Sr. Process Engineer
RE: Seawater - material selection
I am sorry , I was traveling and could not write. Application is sea water, but I am working for valves not pumps.
My problem is,
I had some of recommended documents and many others. However some sources say that 316 can be used (or 316L)
for sea water whereas some reject use of 316. (I believe 316L or 316 does not differ much unless there is welding)
If you check Brian Nespitt's book, it says 316 can be used
http://books.google.com.sg/books?id=mzsF34JBXGoC&a...
I want to reach to a certain and fixed result for using 316 or S.Duplex for butterfly valve discs.
Any input would be appreciated.
RE: Seawater - material selection
Look at 2205.
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Plymouth Tube
RE: Seawater - material selection
RE: Seawater - material selection
RE: Seawater - material selection
1. Most of it was arrived at testing mill annealed plate that had been blasted and pickled. There is no better mill condition for corrosion resistance.
2. Most of the data was generated in the 60's-70's. When you could fairly well rely on getting 316 that was 17%Cr 2.5% Mo minimum, whereas today it will all be 16%Cr 2.0%Mo. This is a significant difference in corrosion resistance.
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Plymouth Tube
RE: Seawater - material selection
RE: Seawater - material selection
Review the third document provided by TVP. For 316 flow ate and down time is critical. I have seen a number of 316 ss pumps in Texas Gulf coast seawater applications that failed especially when when shut dowms occur with resulting crevice corrosion and pitting.